Symbiotic and non-symbiotic expression of cgMT1, a metallothionein-like gene from the actinorhizal tree Casuarina glauca

Symbiotic and non-symbiotic expression of cgMT1, a metallothionein-like gene from the... A clone for a type 1 metallothionein (cgMT1) was isolated from a Casuarina glauca nodule cDNA library. The corresponding gene belongs to a small family and is highly expressed in roots and nitrogen-fixing nodules, whereas low expression was observed in aerial parts of the plant. The promoter region of cgMT1 was isolated and fused to the β-glucuronidase (gus) gene. Transgenic Casuarinaceae plants showed that the cgMT1 promoter was most active in roots and in the oldest region of the shoot. In situ hybridization indicated that in nodules cgMT1 transcript is present in mature Frankia-infected cells and in the pericycle. Possible roles for cgMT1 in symbiotic and non-symbiotic tissues are discussed. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Plant Molecular Biology Springer Journals

Symbiotic and non-symbiotic expression of cgMT1, a metallothionein-like gene from the actinorhizal tree Casuarina glauca

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Publisher
Springer Journals
Copyright
Copyright © 2002 by Kluwer Academic Publishers
Subject
Life Sciences; Biochemistry, general; Plant Sciences; Plant Pathology
ISSN
0167-4412
eISSN
1573-5028
D.O.I.
10.1023/A:1014415003714
Publisher site
See Article on Publisher Site

Abstract

A clone for a type 1 metallothionein (cgMT1) was isolated from a Casuarina glauca nodule cDNA library. The corresponding gene belongs to a small family and is highly expressed in roots and nitrogen-fixing nodules, whereas low expression was observed in aerial parts of the plant. The promoter region of cgMT1 was isolated and fused to the β-glucuronidase (gus) gene. Transgenic Casuarinaceae plants showed that the cgMT1 promoter was most active in roots and in the oldest region of the shoot. In situ hybridization indicated that in nodules cgMT1 transcript is present in mature Frankia-infected cells and in the pericycle. Possible roles for cgMT1 in symbiotic and non-symbiotic tissues are discussed.

Journal

Plant Molecular BiologySpringer Journals

Published: Oct 13, 2004

References

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